5.7. How do I tell what version of sed I am using?
Try entering "sed" all by itself on the command line, followed by
no arguments or parameters. Also, try "sed --version". In a
pinch, you can also try this:
strings sed | grep -i ver
Your version of 'strings' must be a version of the Unix utility of
this name. It should not be the DOS utility STRINGS.COM by Douglas
Boling.
